These glue sticks are perfect for any crafting project that needs a touch of sparkle. They melted quickly and had a strong hold on all types of materials .After I put it to the test for a few hours, it remained secure. It's great that this product is categorized under "Industrial and Scientific" as it's useful for more than just crafts. The only downside is that the glitter tends to shed a bit, so be cautious when using it on surfaces that need to remain clean..